Finding the Fourth Proportional to 2,191.91, 3,024.72 and 1,247.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.91 : 3,024.72 = 1,247.59 : x
2. Step 2: Convert to fraction form
   2,191.91/3,024.72 = 1,247.59/x
3. Step 3: Cross multiply
   2,191.91x = 3,024.72 × 1,247.59
4. Step 4: Simplify right side
   2,191.91x = 3,773,602.86
5. Step 5: Solve for x
   x = 3,773,602.86/2,191.91
6. Step 6: Final answer
   x = 1,721.60